/Engine/Source/Runtime/Engine/Public/WorldPartition/WorldPartitionStreamingGenerationContext.h
void ForEachActorSetInstance ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(const [FActorSetInstance](API\Runtime\Engine\WorldPartition\IStreamingGenerationContext\FActorSetInstance) &)> Func ) const